29 lines
881 B
Elixir
29 lines
881 B
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Web.Plugs.DigestPlug do
|
|
alias Plug.Conn
|
|
require Logger
|
|
|
|
def read_body(conn, opts) do
|
|
digest_algorithm =
|
|
with [digest_header] <- Conn.get_req_header(conn, "digest") do
|
|
digest_header
|
|
|> String.split("=", parts: 2)
|
|
|> List.first()
|
|
else
|
|
_ -> "SHA-256"
|
|
end
|
|
|
|
unless String.downcase(digest_algorithm) == "sha-256" do
|
|
raise ArgumentError,
|
|
message: "invalid value for digest algorithm, got: #{digest_algorithm}"
|
|
end
|
|
|
|
{:ok, body, conn} = Conn.read_body(conn, opts)
|
|
encoded_digest = :crypto.hash(:sha256, body) |> Base.encode64()
|
|
{:ok, body, Conn.assign(conn, :digest, "#{digest_algorithm}=#{encoded_digest}")}
|
|
end
|
|
end
|